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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package org.libreoffice.report.pentaho;
import org.libreoffice.report.DataSource;
import org.jfree.report.DataSourceException;
import org.jfree.report.ReportData;
public class StarReportData implements ReportData
{
private final DataSource dataSource;
private int currentRow;
private final int rowCount;
public StarReportData(final DataSource dataSource)
throws org.libreoffice.report.DataSourceException
{
if (dataSource == null)
{
throw new NullPointerException();
}
this.dataSource = dataSource;
this.currentRow = 0;
this.rowCount = dataSource.getRowCount();
}
public boolean setCursorPosition(final int row) throws DataSourceException
{
try
{
final boolean ret = dataSource.absolute(row);
if (ret)
{
currentRow = row;
}
return ret;
}
catch (org.libreoffice.report.DataSourceException e)
{
throw new DataSourceException("Failed to move cursor", e);
}
}
public void close()
throws DataSourceException
{
try
{
dataSource.close();
}
catch (org.libreoffice.report.DataSourceException e)
{
throw new DataSourceException("Failed to close datasource", e);
}
}
public int getCursorPosition()
throws DataSourceException
{
return currentRow;
}
/**
* This operation checks, whether a call to next will be likely to succeed. If
* there is a next data row, this should return true.
*
* @return
* @throws org.jfree.report.DataSourceException
*
*/
public boolean isAdvanceable() throws DataSourceException
{
return currentRow < rowCount;
}
public boolean next()
throws DataSourceException
{
try
{
if (dataSource.next())
{
currentRow += 1;
return true;
}
return false;
}
catch (org.libreoffice.report.DataSourceException e)
{
throw new DataSourceException("Failed to move cursor", e);
}
}
public Object get(final int column)
throws DataSourceException
{
if (!isReadable())
{
throw new DataSourceException("Failed to query column.");
}
try
{
return dataSource.getObject(column + 1);
}
catch (org.libreoffice.report.DataSourceException e)
{
throw new DataSourceException("Failed to query column.", e);
}
}
public int getColumnCount()
throws DataSourceException
{
try
{
return dataSource.getColumnCount();
}
catch (org.libreoffice.report.DataSourceException e)
{
throw new DataSourceException("Failed to query column count.", e);
}
}
public String getColumnName(final int column)
throws DataSourceException
{
try
{
return dataSource.getColumnName(column + 1);
}
catch (org.libreoffice.report.DataSourceException e)
{
throw new DataSourceException("Failed to query column name.", e);
}
}
public boolean isReadable() throws DataSourceException
{
return currentRow > 0 && rowCount > 0;
}
}
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